Product Description

The ANB11D-215/BU2A is a specialized communication node unit designed for Yokogawa CENTUM VP distributed control systems. It enables extended-distance ESB bus communication by integrating an optical repeater, allowing transmission distances of up to 5 kilometers.

Engineered for high-reliability architectures, the unit features a dual-redundant power supply configuration, ensuring continuous operation even in the event of a single power module failure.

Equipped with the BU2A connector unit, this node supports stable data transmission across both fiber optic links and local copper-based ESB connections. As a Basic type (non-explosion protected model), it is intended for general industrial environments where long-distance, high-integrity communication is essential.

Technical Specifications

Application Scenarios

The ANB11D-215/BU2A is ideally suited for large-scale industrial environments where long-distance communication between control systems and remote I/O stations is required. Typical applications include:

• Water treatment plants

• Mining operations

• Distributed tank farms

• Large-scale process facilities

By utilizing optical fiber communication, the unit ensures high immunity to electromagnetic interference (EMI) and maintains reliable data transmission over extended distances.

FAQ

How does the optical repeater benefit the DCS network?
The integrated optical repeater enables communication distances of up to 5 km while providing strong resistance to electromagnetic interference, ensuring stable operation in electrically noisy industrial environments.

Does the unit include the necessary bus terminators?
Yes, the unit includes the BU2A connector assembly with a built-in ESB bus terminator, which helps minimize signal reflection and ensures reliable communication at the end of the bus segment.